import subprocess,re
on=0
off=0
list=['www.baidu.com','192.168.1.1','127.0.0.1','k0000.com']
for a in range(1,255):a="192.168.1."+str(a)p = subprocess.Popen(["ping.exe", a,'-n','2','-w','1'], stdin = subprocess.PIPE, stdout = subprocess.PIPE, stderr = subprocess.PIPE, shell = True)out = p.stdout.read().strip().decode('utf-8')#print (out)m=re.search(r'out',out)#print('m:',m)if m != None:print(a,'\tOff_line')off+=1#print(out)else:print(a,'\tOn_line ')on+=1
print("ON:",on,"\t","Off:",off)

2.

#python3.4 for windos
import time,threading,subprocess
class test(threading.Thread):def __init__(self,ip_start,ip_end):threading.Thread.__init__(self)self.ip_start = ip_startself.ip_end = ip_enddef run(self):#print (self.ip_start,self.ip_end)on=0off=0a=time.time()for num in range(self.ip_start,self.ip_end):#test.check_ip(self,num)num='192.168.1.'+str(num)p=subprocess.call(["ping.exe", num,'-n','1','-w','0.2'],stdout = subprocess.PIPE,shell = True)if p == 0:on+=1print(num,'is Up !')else:off+=1print(num,'is Down !')b=time.time()print(b-a,'ON:'+str(on),'OFF:'+str(off))if __name__=='__main__':ts=test(1,255)ts.start()#效果需要2分钟左右ping完254个IP

3.

#!/bin/env python2.7
#pyrhon2.7 for ubuntu1404
import multiprocessing,subprocess
import os,time
result = []   #设置进程池
a=time.time()
def run(i):   #定义运行函数IP='192.168.1.'+str(i)#a=os.system('ping -c 1 -w 1 %s' % IP)num = subprocess.call('ping -c 1 -W 1 %s'%IP ,stdout = subprocess.PIPE,shell = True)if num == 0:print IP,'is up !'else:print IP,' is down !'
p= multiprocessing.Pool(processes=45)   #设置进程数
for i in range(255):result.append(p.apply_async(run,('%s'%i,))) #添加进程result,并处理
p.close()
#p.join()
for res in result:res.get(timeout=2) #获取结果
print time.time()-a
#结果6、7秒检测完254个IP